120V AC Power Supply and Safety Relay
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Description
The Allen-Bradley Guardmaster 120V AC interface box consists of a NEMA 4 rated lockable metal enclosure, a DIN mount 3 A, 24V DC power supply and either a single or dual 22.5 mm safety relay(s).
The single safety relay module provides three N.O. safety and one N.C. auxiliary (non-safety) “potential free” relay outputs. The dual safety relay configuration allows two pairs of safety light curtains to independently control one or two machines.
The safety relay(s) can be configured for manual reset or automatic reset. The resetting function can be through the key switch mounted on the front cover of the interface box.
Pre-punched holes located on the bottom of the enclosure allow for easy wiring of the system.
Specifications
| Safety Ratings | |
| Safety Classification | Nonsafety Rated |
| Power Supply | |
| Input Power, Max. | 120/230V AC |
| Power Consumption | 2 W/4 W |
| Outputs | |
| Safety Outputs | 2 N.O. or 4 N.O. |
| Auxiliary Outputs | 1 N.C. or 2 N.C. Nonsafety |
| Switching Current @ Voltage, Min. | 10 mA @ 10V |
| Operating Characteristics | |
| Response Time | 15 ms |
| Status Indicators | Power = Green K1 = Green if Closed. K2 = Green if Closed. |
| Recovery Time | 100 ms |
| Electrical Life | 222V AC/4 A/880V A cosf = 0.35 - 100,000 operations |
| Mechanical Life | 2,000,000 operations |
| Operating Frequency | 1200 cycles/hour, max. |
| Environmental | |
| Enclosure Type Rating | IP65 (NEMA 4) |
| Relative Humidity | 90% |
| Operating Temperature [C (F)] | -5…55° (23…131°) |
| Vibration | 0.35 mm, 10…55 Hz |
| Shock | 10 g, 16 ms, 100 shocks |
| Physical Characteristics | |
| Weight [kg (lb)] | 440L-M8400: 4.87 (10.75) 440L-M8500: /5.1 (11.25) |
Product Selection
| Safety Outputs | Auxiliary Outputs | Power Supply Output | Cat. No. |
| 2 N.O. | 1 N.C. nonsafety | 120V AC/230V DC | 440L-M8400 |
| 4 N.O. | 2 N.C. nonsafety | 120V AC/230V DC | 440L-M8500 |
Approximate Dimensions
Dimensions are shown in mm (in.). Dimensions are not intended to be used for installation purposes.
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Typical Wiring Diagram
M8400 Single Relay
Wiring diagram is not intended to be used for installation purposes.
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Typical Wiring Diagram
M8500 Dual Relay
Wiring diagram is not intended to be used for installation purposes.
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